我们在化学中所做的很多都是在恒定的温度和压强下进行的。
So much of what we do in chemistry does take place with constant temperature and pressure.
多年来，有一些恒定的因素使情人节特别适合那些可爱的女士。
Over the course of years, there have been some constant factors to make Valentine's Day special for those lovely ladies.
将这件事贯穿到你一天的生活中，那你将会处在放松和享受的恒定状态中。
Do this thing throughout your day, and you will be in a constant state of relaxation and enjoyment.
他们必须专注于以恒定速度持续的自然过程，并且在岩石中留下某种有形的记录。
They would have to concentrate on natural processes that continue at a constant rate and that also leave some sort of tangible record in the rocks.
为了使地球保持恒定的平均温度，来自地球的这种辐射必须平衡入射的太阳辐射。
For the Earth to maintain a constant average temperature, such emissions from the planet must balance incoming solar radiation.
相对湿度恒定的假设是重要的，因为大气中的水蒸气是红外波长辐射的另一种有效吸收剂。
The assumption of constant relative humidity is important, because water vapor in the atmosphere is another efficient absorber of radiation at infrared wavelength.
工厂生活需要一个更严格的时间表，在那里，工作在铃声中开始，工人让机器以恒定的速度保持运行。
Factory life necessitated a more regimented schedule, where work began at the sound of a bell and workers kept machines going at a constant pace.
然而，当在实验室的恒定条件下观察硅藻时，它们仍然表现出周期性的行为，继续按计划挖掘几个星期。
However, when diatoms are observed under constant conditions in a laboratory, they still display periodic behavior, continuing to burrow on schedule for several weeks.
由于P波和S 波以不同但相当恒定的速度传播，它们到达的间隔与到震源或初始破裂点的距离成比例地增加。
Because P and S waves travel at different but fairly constant speeds, the interval between their arrivals increases in proportion to the distance from the earthquake focus, or initial rupture point.
负责南安普顿研究的AbuBakr Bahaj说：潮汐流的能源前景比风能要好得多，因为水流是可预测和恒定的。
AbuBakr Bahaj, in charge of the Southampton research, said: The prospects for energy from tidal currents are far better than from wind because the flows of water are predictable and constant.
在15世纪早期，人们发明了螺旋弹簧或均力圆锥轮，尽管它的主弹簧的张力不断变化，但仍能对计时装置的齿轮保持恒定的力。
In the early 1400s came the invention of the coiled spring or fusee which maintained constant force to the gear wheels of the timekeeper despite the changing tension of its mainspring.
对于那些使用恒定的冰川融化的水作为饮用水的数百万人来说，冰川面积不断缩小是一个难题。
Shrinking glaciers are a problem for million is of people who use regular glacier melt for drinking water.
我们将不会具有恒定的压力热容量，而是具有恒定的体积热容量。
We're not going to have the constant pressure heat capacity, but the constant volume heat capacity.
例如，无论一个舞者多么想要跳离地板，然后开始旋转，角动量守恒定律绝对阻止这样的动作。
For example, no matter how much a dancer wishes to leap off the floor and then start turning, the law of conservation of angular momentum absolutely prevents such a movement.
椎动脉，颈干和乳内动脉的起源非常恒定。
The origin of the vertebral artery, the thyrocervical trunk and the internal mammary artery is very constant.
气流的最大穿透深度随气体动量的增加而增加，而氧气喷枪的直径保持恒定。
The maximum penetration depth of gas flow is increased with the increase of gas momentum while the diameter of oxigen gunjet keeps constant.
胫骨前肌肌筋膜瓣解剖血管恒定，血运丰富。
The tibialis anterior muscle and deep fascia flaps possess regular vasa vasorum and abundant vascularity.
恒定应力不能强健肌肉，它会杀死你。
我们假设，这些过程中温度都是恒定的。
I've assumed the temperature is constant in all these things.
我们不用特别指明,它是在恒定u下测量的。
动量守恒定律告诉你,碰撞后速度是多少。
So the conservation of momentum tells you what the speed is after the collision.
我相信，机械能守恒定理，我忽略了张力。
I believed in the conservation of mechanical energy and I overlooked the tension.
即恒定体积，改变温度，这里恒定温度下。
Then we can take the derivative of that quantity, when we vary the temperature, holding the volume constant.
这是我们的物理规律保持恒定的最好的检验。
That's one of the best tests we have of the constancy of the laws of physics.
考虑链式法则，还应该再乘以恒定的温度下的。
虽然我没有写出来，但是这些都是在恒定温度下的，对吗？
And I haven't written it in, but all of these are at constant temperature, right?
当重物掉落时候的力是恒定的，因此做功就是，这段长度是。
The force, as this weight drops is constant, mgh and so the work is just going to be m g h, h where this is h.
不知怎么的，这一定律和,角动量守恒定律有所相似。
Somehow, it has the smell of some conservation of angular momentum.
你力所能及的时候可以去调停，但不必有恒定的标准。
你力所能及的时候可以去调停，但不必有恒定的标准。
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